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Natural frequency optimization of braided bistable carbon/epoxy tubes: Analysis of braid angles and stacking sequences

Wu, C and Viquerat, AD (2016) Natural frequency optimization of braided bistable carbon/epoxy tubes: Analysis of braid angles and stacking sequences Composite Structures, 159. pp. 528-537.

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Abstract

The natural frequency of cantilevered bistable carbon/epoxy reeled composite (BRC) slit tubes constructed from combinations of braided and unidirectional (UD) plies is optimized with respect to ber orientation angles and laminate stacking sequences. BRC tubes have the same geometry as a carpenter's tape; however, they also have a second stable con guration in the coiled state, and it is considered likely that the coiled state diameter will be xed by the geometry of the deployment mechanism or its housing. The optimization process uses the BRC coiled diameter as a constraint, and the maximum and minimum physically achievable braid angles as bounds. Both individual tubes, and a simple deployable solar array concept are analyzed. It is observed that the braid angle, rather than ply location in the stack is of greater importance when optimizing long slender or shallow BRCs, whereas both factors must be considered in shorter BRCs. The sensitivity of natural frequency and coiled diameter to braid angle perturbations indicates the importance of precision during manufacture.

Item Type: Article
Subjects : Mechanical Engineering
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
NameEmailORCID
Wu, CUNSPECIFIEDUNSPECIFIED
Viquerat, ADUNSPECIFIEDUNSPECIFIED
Date : 1 January 2016
Identification Number : 10.1016/j.compstruct.2016.09.075
Copyright Disclaimer : © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords : Natural frequency optimization, bistable composite, solar array
Depositing User : Symplectic Elements
Date Deposited : 28 Sep 2016 14:44
Last Modified : 01 Oct 2017 02:08
URI: http://epubs.surrey.ac.uk/id/eprint/812303

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